The Smartwool Headband is a vital accessory for cold weather workouts. Made of 100% SmartWool interlock knit, the Headband is itch-free, controls moisture and temperature, and is naturally antimicrobial to fend off odor. A wider width keeps hair back and covers ears, and the double layer construction is bulk-free and comfortable. The SmartWool Headband is perfect for warmer days or high aerobic activities.